//九九乘法表
document.write("<table>");
for (i = 1;i <= 9;i++){
    document.write("<tr>");
    for (j = 1; j <= i;j++ ){
        document.write("<td>");
        document.write(j + "*" + i + "=" + j * i);
        document.write("</td>");
    }
    document.write("</tr>");
}
document.write("</table>");

